The answer to 'emergency plumbing slow draining' is that a slow-draining sink or shower is often caused by a clogged drain. Common causes include hair, soap scum, food particles, and other debris buildup in the pipes. Symptoms include standing water that takes a long time to drain or a sink/shower that doesn't empty fully.
For minor clogs, you may be able to clear the drain yourself using a plunger, drain snake, or chemical drain cleaner. However, if the clog is more serious or the problem persists, it's best to call a professional plumber. They have the tools and expertise to properly diagnose and fix the issue, preventing further damage to your plumbing system.